Our systems are failing. Old models – for education, healthcare, government, food production and energy supply – are creaking under the weight of modern challenges. As the world’s population heads towards 10 billion, it is clear we need new approaches. Futurologist Mark Stevenson set out to find them, across four continents uncovering an enthralling picture of what can be done to address the world’s most pressing dilemmas, a journey that offers a much needed dose of down-to-earth optimism. It is a window on (and a roadmap to) a different and better future.